LM4040DEM3-3.0

Overview

The LM4040DEM3-3.0 is a micropower shunt voltage reference from Texas Instruments, providing a fixed 3.0 V output. It features an initial accuracy of ±1% and operates within a temperature range of -40°C to +85°C. The device utilizes a SOT-23-3 surface-mount package with a maximum shunt current of 15 mA and a typical operating current of 70 µA. Its temperature coefficient is specified at 150 ppm/°C, ensuring stable performance in industrial applications.

Feature Summary

• Provides a fixed 3.0 V reference voltage with ±1% initial accuracy for precision circuitry.
• Operates as a micropower shunt reference with low quiescent current consumption.
• Designed for space-constrained designs using the compact SOT-23-3 surface-mount package.

Applications

• Portable battery-powered instrumentation requiring low power consumption
• Data acquisition systems needing stable reference voltages
• Industrial control circuits operating within the industrial temperature range

Procurement Notes

Verify the specific suffix 'DEM3' against the official datasheet to confirm the 1% accuracy grade and 3.0 V output variant. Ensure the ordering part number matches the required temperature range and package type. Cross-reference with the manufacturer's latest documentation to confirm availability status and any potential obsolescence notices before finalizing procurement plans.

Selection Notes

Select this component when a fixed 3.0 V reference with ±1% tolerance is required in a small SOT-23-3 footprint. It is suitable for applications where low standby current is critical. Compare against higher accuracy grades (A/B/C) if tighter tolerances are needed, or consider alternative packages if thermal dissipation requirements exceed the capabilities of the SOT-23 form factor.

Part Context

This part belongs to the LM4040 series of micropower shunt voltage references. The series offers various fixed output voltages and accuracy grades. The LM4040 family is designed for high precision and stability over the industrial temperature range, making it a common choice for general-purpose voltage referencing in analog and mixed-signal circuits.

Replacement Considerations

Publicly confirmed substitute part numbers for this specific variant are not available in the provided source material. Consult the manufacturer's datasheet for recommended alternates or pin-compatible replacements if this specific part is unavailable.